Wrench



(No Model.)

R. T. TORKELSON.

WRENCH.

No. 459,218. Patented Sept. 8, 1891.

m n M W W 6 7 0 a a W W J M w m a m W Z UNITED STATES PATENT OFFICE.

REINHARD T. TORKELSON, OF HATFIELD, ASSIGNOR TO JOHN SPEIRS, OFORCESTER, MASSAUHUSETTS.

WRENCH.

SPECIFICATION forming part of Letters Patent No. 459,218, datedSeptember 8, 1891.

Application filed January 28, 1891. Serial No] 379,421. (No model.)

To It whom it may concern:

Be it known that I, REINHARD T. TORKEL- SON, of Hatfield, county ofHampshire, State of Massachusetts, have invented an Improvement in\Vrenches, of which the following description, in connection with theaccompanying drawings, is a specification, like letters on the drawingsrepresenting like parts.

My invention is embodied in a wrench of IO that class in which thehandle and one jaw of the wrench are formed in a single forging or pieceof metal provided with a longitudinal recess, and the other jaw is madein one piece of metal or forging with a shank that works in the saidlongitudinal recess of the handle portion and is operated by a nutworking on a threaded portion of said shank and engaging with the handleportion of the wrench.

The object of the invention. is to produce a wrench of the kind justdescribed, in which the handle portion can be made by forging in diesand recessed properlyto receive the shank of the other jaw of the wrenchwithout subsequent cutting or finishing operation by tools.

2 5 renches of this kind have been heretofore made in which the handleand one jaw are formed in a single drop-forging and a portion of theshank recess is formed in the handle in the operation of forging, thesaid handle being longitudinally slotted or grooved from one side for aportion of its length; but in order to complete the socket for the shankthe groove formed in the forging has to be undercut in a subsequentoperation by a milling- 3 5 tool.

In accordance with the present invention the handle member of the wrenchis made by drop-forging, and the handle is so constructed that recessesare made from both sides of the handle in the operation of forging, therecess from one side occupying a space lengthwise of the handleintermediate between the re cesses at the other side and all therecesses extending more than half-way through the handle, so thattogether they form a complete longitudinal recess or mortise to properlyguide and support the shank for the other jaw, the said mortise beingopened for a part of its length to the side of the handle at each sidethereof, and also being closed for a part of its length of the handle ateach side thereof sufficiently to confine and guide the shank of theother member of the wrench in all positions. The shank may be operatedby the usual nut, and the recess for the threaded portion of the shankmay be formed in forging the handle, or, if preferred, may be formed bya subsequent boring operation, the present invention relating especiallyto the construe tion by which the rectangular mortise for confining therectangular portion of the shankjaw is produced.

Figure]. is a side elevation of a wrench embodying this invention; Fig.2, a side elevation showing the opposite side of the handle of thewrench to that presented in Fig. 1; and Figs. 2) to 7, inclusive,transverse sections on lines 3 3, a 4:, 5 5, 6 6, 7 7, respectively,Fig. 1.

The invention relates especially to the construction of the handlemember a of the wrench, which has one jaw a made integral with it in theusual manner and co-operatcs with another jaw I), having a shank portion12 that is rectangular in cross-section and has a threaded continuationI)" of said shank that co-operates with a nut 0, working in a transverseopening c in the handle portion, all said parts, except the handleportion, being shown as of the same construction and having the samemode of operation as in a wellknown form of wrench now in common use.

In order to provide a suitable mortise or longitudinal guide-passage inthe handle a to receive and support the shank b the said handle a is inthe operation of forging provided with recesses (0* 60', (see Figs. 1,5, and 7,) extending from one side of the handle and more than half-waythrough the handle, and a recess a, (see Figs. 2 and 6,) extending infrom the other side of the handle. The width of the said recesses is thesame as the width of the shank b so that the side walls of the recessform a continuous guide for the upper and lower edges of the shank b asshown, and the. said recesses are so formed as to afford 5 bridges a aopposite the recesses (L a, (see Figs. 5 and 7,) and a opposite therecess a, (see Figs. 2 and 6,) which bridges form guides extending apart of the length of the shank b at each side face thereof, the saidbridges, too together with the side walls of the recesses, constitutinga complete guide for the shank b The said guide is all formed in the actof drop-forging the handle, it being necessary only to provide dies withproper projections to form the recesses a a a and at the same time withthe hollow of the other die to form the bridges a a a No machine-workwill be required, it being necessary only to remove the fins that may beformed by the action of the die.

The recess to receive the threaded portion 11 of the shank may be madeby boring the handle in the usual manner, or, if desired, to save thecost of additional machine-work, it may be formed, as shown in Figs. 1and 3, by a recess or groove at, extending in from one side of thehandle deep enough to accommodate said threaded shank b", said groovebeing produced by proper projectionon the die that acts on that side ofthe handle-forging.

I claim The herein-described wrench-handle, provided with recesses onthe opposite sides of said handle and bridges at the bottoms of saidrecesses which unite to form the guideopeningfor the shank of the othermember of the Wrench, substantially as described.

In testimony whereof I have signed inyname to this specification in thepresence of two subscribing Witnesses.

REINHARD T. TORKELSON.

- \Vitnesses:

GEORGE A. ELDER, CHARLES N. CLARK.

